grampajack
AR Junkie
- Joined
- Mar 31, 2016
- Messages
- 1,714
I was searching for ways to tighten up a loose flange, and one guy suggested using paint to build up the barrel extension. He didn't really get any feedback, but the idea has some merits I think.
Basically what was proposed is to tape off the parts you don't want built up (the shoulder and index pin), then spin the barrel at a constant rate, perhaps in a lath at low speed, while spraying paint onto the extension. I think this is better than building up epoxy and turning on a lathe because it would build up the entire length of the extension, whereas with the epoxy you're left with a few mm of unbedded extension since the index pin gets in the way of the cutter.
It also has the advantage of being removable. There are paints that are heat resistant enough to work, yet are still relatively easy to remove with solvents, and that is certainly not the case for any epoxy that I know of.
At the very least, this seems like a better idea than loctite. The loctite will melt unless you're very careful about your rate of fire, plus it's a huge hassle to remove the barrel if you've bedded it with loctite.
So, any obvious problems, or is this worth a try?
Basically what was proposed is to tape off the parts you don't want built up (the shoulder and index pin), then spin the barrel at a constant rate, perhaps in a lath at low speed, while spraying paint onto the extension. I think this is better than building up epoxy and turning on a lathe because it would build up the entire length of the extension, whereas with the epoxy you're left with a few mm of unbedded extension since the index pin gets in the way of the cutter.
It also has the advantage of being removable. There are paints that are heat resistant enough to work, yet are still relatively easy to remove with solvents, and that is certainly not the case for any epoxy that I know of.
At the very least, this seems like a better idea than loctite. The loctite will melt unless you're very careful about your rate of fire, plus it's a huge hassle to remove the barrel if you've bedded it with loctite.
So, any obvious problems, or is this worth a try?